| Name | 074437 |
| Title | Constraining X-ray Absorption in Emergent BAL Quasars |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744370201 |
| DOI | https://doi.org/10.5270/esa-v1l70e0 |
| Author | European Space Agency |
| Description | Quasar outflows are important for their feedback on galaxy evolution and black hole growth. These outflows are observed as broad UV absorption lines (BALs) in quasars, reaching velocities >0.1c. In radiative acceleration models, UV-absorbing gas must be shielded by X-ray absorbing gas to reach such velocities and, typically, BAL quasars are indeed X-ray-weaker than non-BAL quasars. However, recent observations are shaking our understanding on how the X-ray and UV absorbers are connected. We propose to re-observe with XMM-Newton three zvirgul2 quasars that did not display UV absorption at the time of the first XMM-Newton observations, but that have recently developed new BAL troughs. These observations will allow us to constrain, for the first time, the X-ray/UV connection on newly emerged BALs. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-11-08T14:59:05Z/2015-05-01T17:39:40Z |
| Version | PPS_NOT_AVAILABLE |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2016-05-20T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2016, Constraining X-Ray Absorption In Emergent Bal Quasars, PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-v1l70e0 |